Transport and AC susceptibility critical currents in Ag sheathed Bi(Pb)2223 tapes
✍ Scribed by A. Baldini; E. Borchi; R. Garrè; A. Lascialfari; L. Masi; A. Peruzzi
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 498 KB
- Volume
- 262
- Category
- Article
- ISSN
- 0921-4534
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✦ Synopsis
Transport and AC susceptibility measurements have been performed in Ag sheathed Bi(Pb)2223 tapes. The complex susceptibility ( X' + ix"), has been measured as a function of temperature for various applied fields. From the X"(T) curves the values of the magnetic critical current density have been inferred via the application of Bean's critical-state model and a comparison with the corresponding transport values has been made. The agreement between the two sets of data is rather good, confirming that, for the examined tapes, Bean's field-independent assumption is not too far from the sample's actual state.
📜 SIMILAR VOLUMES
The AC losses are investigated at 77 K on the Ag-sheathed (Bi, Pb)2SrzCa2Cu30 x monofilamentary tape and multifilamentary tapes with filament numbers equal to 7, 19, 37 and 61, through an AC transport method under self-fields and an AC magnetic method under longitudinal fields. Although the main con
BSCCO-2223 tapes have been produced by the 'powder-in-tube' method with reproducible critical current densities of > 1 x 104 A cm-2 at 77 K and 5 x 104 A cm-2 at 4.2 K. Superconductivity at 77 K was retained in fields of up to 7 T. The influence of mechanical treatments (e.g. drawing, rolling and pr